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ruslelena [56]
3 years ago
14

An object travels at 15 meters in 10 seconds east. What is it’s velocity?

Physics
1 answer:
Juli2301 [7.4K]3 years ago
5 0
A new jxo rib is excellent is.
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A speedboat increases its speed from 14.5 m/s to 29.3 m/s in a distance of 172 m.
dalvyx [7]

Answer:

a. Acceleration, a = 1.88 m/s²

b. Time, t = 7.87 seconds.

Explanation:

Given the following data;

Initial velocity, U = 14.5m/s

Final velocity, V = 29.3m/s

Distance, S = 172m

a. To find the acceleration of the speedboat;

We would use the third equation of motion;

V² = U² + 2aS

Substituting into the formula

29.3² = 14.5² + 2a*172

858.49 = 210.25 + 344a

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a = 648.24/344

Acceleration, a = 1.88 m/s²

b. To find the time;

We would use the first equation of motion;

V = U + at

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1.88t = 14.8

Time, t = 14.8/1.88

Time, t = 7.87 seconds.

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